38700021 has 8 divisors (see below), whose sum is σ = 51815104. Its totient is φ = 25692480.

The previous prime is 38700019. The next prime is 38700031. The reversal of 38700021 is 12000783.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 38700021 - 2¹ = 38700019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38700031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26041 + ... + 27486.

It is an arithmetic number, because the mean of its divisors is an integer number (6476888).

Almost surely, 2^38700021 is an apocalyptic number.

It is an amenable number.

38700021 is a deficient number, since it is larger than the sum of its proper divisors (13115083).

38700021 is a wasteful number, since it uses less digits than its factorization.

38700021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53771.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 38700021 is about 6220.9340938480. The cubic root of 38700021 is about 338.2494249172.

The spelling of 38700021 in words is "thirty-eight million, seven hundred thousand, twenty-one".